x86: traps_xx: various small changes
- order of local variable declarations
- minor code changes
Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Acked-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/traps_64.c b/arch/x86/kernel/traps_64.c
index 9b9245f..74e9929 100644
--- a/arch/x86/kernel/traps_64.c
+++ b/arch/x86/kernel/traps_64.c
@@ -268,7 +268,6 @@
if (!task)
task = current;
- tinfo = task_thread_info(task);
if (!stack) {
unsigned long dummy;
@@ -294,6 +293,7 @@
* current stack address. If the stacks consist of nested
* exceptions
*/
+ tinfo = task_thread_info(task);
for (;;) {
char *id;
unsigned long *estack_end;
@@ -435,8 +435,8 @@
*/
void dump_stack(void)
{
- unsigned long stack;
unsigned long bp = 0;
+ unsigned long stack;
#ifdef CONFIG_FRAME_POINTER
if (!bp)
@@ -459,12 +459,8 @@
unsigned long sp;
const int cpu = smp_processor_id();
struct task_struct *cur = cpu_pda(cpu)->pcurrent;
- u8 *ip;
- unsigned int code_prologue = code_bytes * 43 / 64;
- unsigned int code_len = code_bytes;
sp = regs->sp;
- ip = (u8 *) regs->ip - code_prologue;
printk("CPU %d ", cpu);
__show_regs(regs);
printk("Process %s (pid: %d, threadinfo %p, task %p)\n",
@@ -475,12 +471,18 @@
* time of the fault..
*/
if (!user_mode(regs)) {
+ unsigned int code_prologue = code_bytes * 43 / 64;
+ unsigned int code_len = code_bytes;
unsigned char c;
+ u8 *ip;
+
printk("Stack: ");
_show_stack(NULL, regs, (unsigned long *)sp, regs->bp);
printk("\n");
printk(KERN_EMERG "Code: ");
+
+ ip = (u8 *)regs->ip - code_prologue;
if (ip < (u8 *)PAGE_OFFSET || probe_kernel_address(ip, c)) {
/* try starting at RIP */
ip = (u8 *)regs->ip;
@@ -585,7 +587,7 @@
return 0;
}
-void die(const char * str, struct pt_regs *regs, long err)
+void die(const char *str, struct pt_regs *regs, long err)
{
unsigned long flags = oops_begin();
@@ -927,8 +929,8 @@
asmlinkage void __kprobes do_debug(struct pt_regs * regs,
unsigned long error_code)
{
- unsigned long condition;
struct task_struct *tsk = current;
+ unsigned long condition;
siginfo_t info;
trace_hardirqs_fixup();
@@ -1201,7 +1203,7 @@
/*
* initialize the per thread extended state:
*/
- init_thread_xstate();
+ init_thread_xstate();
/*
* Should be a barrier for any external CPU state:
*/